$\"\"$ $\"\"$ $\"\"$

The equation is $\"\"$ .

According to subtraction property of equality: if $\"\"$ , then $\"\"$ .

$\"\"$ (Subtract y from each side)

$\"\"$ (Additive inverse property: $\"\"$ )

$\"\"$ (Distributive property: $\"\"$ ) $\"\"$

According to division property of equality: if $\"\"$ , then $\"\"$ .

$\"\"$ (Divide each side by $\"\"$ )

$\"\"$ (Cancel common terms) $\"\"$

The solution is $\"\"$ .